James is available for hire
Hire JamesJames Perlman
Verified Expert in Engineering
Software Developer
Los Angeles, CA, United States
Toptal member since February 3, 2020
Bio
James is a senior software engineer specializing in React and React Native, focused on building fast, intuitive mobile and web apps. He has experience delivering cross-platform applications on iOS and Android, with a strong eye for performance and maintainability. James's background in GPU technologies like WebGPU, WebGL, Vulkan, Metal, and CUDA adds an extra edge for graphics-intensive features.
Portfolio
jperl LLC
NVIDIA CUDA, Machine Learning, AI Research, PyTorch, ChatGPT...
Stealth AI Startup
NVIDIA CUDA, PyTorch, OpenAI, Mobile
Dave
React Native, JavaScript, Stripe API, Plaid API, SwiftUI, Twilio, Mobile, SMS
Experience
- iOS - 12 years
- JavaScript - 10 years
- Objective-C - 6 years
- Swift - 3 years
- Adobe After Effects - 3 years
- React Native - 3 years
- React - 3 years
- TypeScript - 1 year
Availability
Part-time
Preferred Environment
Visual Studio Code (VS Code), React, React Native, Graphics, Next.js, Large Language Models (LLMs)
The most amazing...
...project I've done was TurboNeRF, a fully self-motivated and self-funded rendering engine capable of doing photorealistic inverse rendering in Blender.
Work Experience
Software Architect
2022 - PRESENT
jperl LLC
- Developed TurboNeRF, a neural field training and rendering application.
- Read research papers, attended conferences, conversed with researchers, and learned about and implemented novel technologies to express myself artistically.
- Managed an open source project and brought native neural rendering to Blender.
Technologies: NVIDIA CUDA, Machine Learning, AI Research, PyTorch, ChatGPT, Amazon Web Services (AWS), ChatGPT API, Firebase, OpenAI, Amazon Simple Notification Service (SNS)
Research Engineer
2023 - 2024
Stealth AI Startup
- Developed in-house tools for training neural fields.
- Developed in-house tools for solving the structure-from-motion problem.
- Implemented cutting-edge research in a fast-paced environment.
Technologies: NVIDIA CUDA, PyTorch, OpenAI, Mobile
Senior Front-end Engineer
2021 - 2021
Dave
- Worked with designers to bring designs and animations to life in the app.
- Refactored, modernized, and updated legacy code to make development easier going forward.
- Mentored junior engineers to bring them up to speed with best practices in the company.
Technologies: React Native, JavaScript, Stripe API, Plaid API, SwiftUI, Twilio, Mobile, SMS
Senior React Native Engineer
2020 - 2021
Honeycomb Labs
- Developed the MVP from scratch, gave the app its current look and feel by creating a UI library that displays content in hexagons instead of squares.
- Set up automated releases using Fastlane and Continuous Integration via GitHub Actions.
- Refactored codebase using TypeScript and functional component architecture.
Technologies: React Native, iOS, Swift, Objective-C, TypeScript, JavaScript, SwiftUI, Twilio, Mobile, SMS
Senior iOS Engineer
2016 - 2019
Lottery.com
- Worked directly with designers to come up with intuitive user interfaces.
- Developed the technology to scan a lottery ticket using a phone camera.
- Helped to rewrite the original iOS app in React Native.
- Meticulously stayed on top of Apple's software requirements, including the upgrade to Xcode 10 and changes to the App Store policy.
- Oversaw iOS build releases and React Native code pushes.
Technologies: Node.js, React, React Native, Swift, Objective-C, JavaScript, Plaid API, SwiftUI, Twilio, Mobile, SMS
iOS Engineer
2014 - 2016
Freelance
- Worked with clients to determine expectations and complete requirements.
- Researched best practices and the most efficient technologies to use for the problems at hand.
- Managed the iOS App Store release cycle for many projects from start to finish.
Technologies: Swift, Objective-C, Mobile
iOS Engineer
2015 - 2015
We are Few
- Worked on a team with backend developers to build new ideas from scratch.
- Communicated directly with designers to come up with beautiful user interfaces.
- Worked directly with project managers to come up with goals and deadlines for our clients.
- Wrote documentation for handing off apps to clients after development was finished.
- Fixed bugs along with maintaining and refactoring code on preexisting projects.
Technologies: Xcode, iOS, Objective-C, Mobile
Experience
Lottery.com App
https://lottery.comI worked on this app from 2016 until 2019. At first, when I joined the team, I was tasked to make the user interface look excellent along with various refactors and bug fixes. When we converted the entire front end to React Native, I was in charge of making sure that the iOS-dependent modules worked as intended.
Stamena
https://apps.apple.com/us/app/stamena-longer-lasting-sex/id1106687104I worked as the sole developer on a Swift-based strength training app. I worked with one designer and had full reign over the underlying software architecture. This project took about two weeks to complete.
360 Rotating Photo Timelapse
This was a personal art project that turned into a significant software challenge consisting of three parts. First, I created an iPhone app (pure Swift) to take videos of a rotating subject at fixed time intervals. Second, I wrote a command-line tool (Bash and Python) to align the videos with some computer vision techniques and convert them to usable image sequences. Third, I created an After Effects plugin (C++, OpenGL, and GLSL), which allows the images to be previewed and rendered directly from Adobe After Effects. (The result is pretty darn cool, I think!) I can control time and rotation independently and do some unique effects with this technology.
Skills
Libraries/APIs
React, Node.js, Stripe API, Plaid API, OpenGL, OpenGL ES, PyTorch
Tools
Adobe After Effects, ChatGPT, Xcode, Adobe Illustrator, Adobe Photoshop, Amazon Simple Notification Service (SNS)
Languages
Swift, Objective-C, JavaScript, C++, C, GLSL, TypeScript, Python
Frameworks
React Native, SwiftUI, Next.js
Platforms
iOS, Mobile, Firebase, Twilio, Visual Studio Code (VS Code), NVIDIA CUDA, Amazon Web Services (AWS)
Other
OpenAI, SMS, Shaders, Machine Learning, ChatGPT API, ES6 Promises, Objects, Compute Shaders, AI Research, Graphics, Large Language Models (LLMs)
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